A student needs 8 more classes to complete her degree; 1 math class and 7 other classes. She can
take 4 classes each semester at college.

(a) We want to find how many ways she can take 4 classes next semester. Is this a permutation or a
combination? Why?

(b) How many ways can she take 4 classes next semester?

(c) Mr. Fair wants her
to take a math class next semester. How many ways can she take 4 classes next
semester, if one of them is the math class?